์ „์ฒด ๊ธ€

Python, C++, Data Science ๊ณต๋ถ€ ๋ธ”๋กœ๊ทธ ์ž…๋‹ˆ๋‹ค.
Big Data๋Š” Traditional Data์™€ ์ƒ๋ฐ˜๋˜๋Š” ๋ฐ์ดํ„ฐ๋“ค๋กœ, ๋งค์šฐ ํฐ ๋ฐ์ดํ„ฐ๋“ค์„ ์ง€์นญํ•ฉ๋‹ˆ๋‹ค.๋น… ๋ฐ์ดํ„ฐ๋Š” ๊ตฌ์กฐํ™” ๋œ ์ƒํƒœ์ผ ์ˆ˜๋„, ์กฐ๊ธˆ ๊ตฌ์กฐํ™”๋œ ์ƒํƒœ์ผ ์ˆ˜๋„, ํ˜น์€ ์ „ํ˜€ ๊ตฌ์กฐํ™”๋˜์ง€ ์•Š์€ ์ƒํƒœ์ผ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค.(= can be constructed, semi-constructed, or not constructed) ๋น… ๋ฐ์ดํ„ฐ๋Š” ์ฃผ๋กœ ์—ฌ๋Ÿฌ๊ฐœ์˜ ์ปดํ“จํ„ฐ์— ๋‚˜๋ˆ„์–ด์ ธ์„œ ์ €์žฅ๋ฉ๋‹ˆ๋‹ค.์šฐ๋ฆฌ๊ฐ€ ํ‰์ƒ์‹œ์— ์ ‘ํ•˜๋Š” ๋ฐ์ดํ„ฐ์˜ ๊ทœ๋ชจ์™€๋Š” ๋น„๊ต๋„ ์•ˆ๋˜๊ฒŒ ๋งค์šฐ ํฐ ๋ฐ์ดํ„ฐ๋กœ ์ธ์‹ํ•˜๋ฉด ๋  ๊ฒƒ ๊ฐ™์Šต๋‹ˆ๋‹ค. ์ด๋Ÿฐ ๋น… ๋ฐ์ดํ„ฐ์—๋Š” ์ „์ฒ˜๋ฆฌ๊ฐ€ ๋งค์šฐ ์ค‘์š”ํ•ฉ๋‹ˆ๋‹ค.๋น…๋ฐ์ดํ„ฐ์˜ ์ „์ฒ˜๋ฆฌ์˜ ๋ช‡๊ฐ€์ง€ ์ข…๋ฅ˜๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์Šต๋‹ˆ๋‹ค. Types of Pre-processing:1. Class Labeling (number, text, digital image, di..
Raw Data๋Š” raw facts, primary data๋ผ๊ณ ๋„ ๋ถˆ๋ฆฌ๋ฉฐ ๊ฐ€๊ณต๋˜์ง€ ์•Š์€ ์›์‹œ ๋ฐ์ดํ„ฐ๋ฅผ ์˜๋ฏธํ•ฉ๋‹ˆ๋‹ค.Raw data๋Š” ๋ฐ”๋กœ ๋ถ„์„(analysis)๋  ์ˆ˜ ์—†๋Š” ์ƒํƒœ์ด๊ณ , ์ฒ˜๋ฆฌ๋ฅผ ๊ฑฐ์ณ์•ผ ๋ถ„์„์— ์‚ฌ์šฉ์ด ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.ํ•˜์ง€๋งŒ ์ฒ˜๋ฆฌ ํ”„๋กœ์„ธ์‹ฑ ์ด์ „์—, ์ „์ฒ˜๋ฆฌ(pre-processing) ๊ณผ์ •์„ ๊ฑฐ์ณ์•ผํ•ฉ๋‹ˆ๋‹ค. ์šฐ์„  Traditional data์˜ ๊ด€์ ์—์„œ ์ „์ฒ˜๋ฆฌ์˜ ์ข…๋ฅ˜๋ฅผ ์—ด๊ฑฐํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค.์—ฌ๊ธฐ์„œ Traditional data๋ž€, ํ•œ ๊ฐœ์˜ ์ปดํ“จํ„ฐ์—์„œ ์ฒ˜๋ฆฌ๋  ์ˆ˜ ์žˆ๋Š” ์–‘์˜ ๊ตฌ์กฐํ™”๋œ ๋ฐ์ดํ„ฐ๋ฅผ ์ง€์นญํ•ฉ๋‹ˆ๋‹ค.๋ฐ˜๋Œ€๋˜๋Š” ๊ฐœ๋…์œผ๋กœ๋Š” ๋น… ๋ฐ์ดํ„ฐ๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. Traditional data์˜ ๊ด€์ ์—์„œ ์ „์ฒ˜๋ฆฌ์˜ ์ข…๋ฅ˜๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์Šต๋‹ˆ๋‹ค.Pre-processings for Traditional Data1. Class Labeling: ์–‘..
Data Science์—์„œ data analysis์™€ analytics๋Š” interchangableํ•˜๊ฒŒ ์‚ฌ์šฉ๋˜๋Š” ์šฉ์–ด์ž…๋‹ˆ๋‹ค.ํ•˜์ง€๋งŒ, ์‹ค์ œ๋กœ๋Š” ๋‘ ์šฉ์–ด์˜ ๊ฐœ๋…์— ์ฐจ์ด๊ฐ€ ์กด์žฌํ•ฉ๋‹ˆ๋‹ค. Data AnalysisSeparate data into some chunks and examine how they relate to other parts.For past events, we try to explain how and/or why something happened. Data analysis๋Š” ๊ณผ๊ฑฐ์— ์ผ์–ด๋‚œ ์ผ์ด ์–ด๋–ป๊ฒŒ ๋ฒŒ์–ด์กŒ๋Š”์ง€, ๋˜๋Š” ์ถ”๊ฐ€์ ์œผ๋กœ ์™œ ๋ฒŒ์–ด์กŒ๋Š”์ง€ ๊นŒ์ง€ ๋ถ„์„ํ•˜๋Š” ํ–‰์œ„์ž…๋‹ˆ๋‹ค.. (why + how) Data AnalyticsThe application of logical and computational ..
int max_num = *std::max_element(vec.begin(), vec.end()); int min_num = *std::min_element(vec.begin(), vec.end()); auto max_num_index = (std::find(vec.begin(), vec.end(), max_num) - vec.begin()); auto min_num_index = (std::find(vec.begin(), vec.end(), min_num) - vec.begin());
Chan Lee
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